Hydroxylating pot type hydrocarbon burner



, l e J, L. BREESE 21,444,494

HYDROXYLATING POT TYPE HYDROCRBON BURNER Filed mw. 15. 1945 be providedfor disposing of the retenes luy e, i-

mnnoxm'rmd Por Tyra HypnooAnBoN Burman Santa Fe, N. Mex., assignor. by

.llames L. Breese,

mesne assignments.

Santa Fe, N. Mex., a corporation of Delaware Bresle Burners( Inc.,

application November i5, 194s, serial No. 510,301

' (ou. 15s-sii My invention relates to an improvement in pot typeburners and has for one purpose to provide improved means for deliveringair to a liquid hydrocarbon burner. Another purpose is to provideimproved means for supplying secondary air to the mixture of vaporizedhydrocarbon and primary air, in a hydroxylating, pot type burner. Another purpose is .to obtain silent combustion. Other purposes willappear from time to time in the course of the specification and claim. I

This invention is illustrated more or less diagrammatically in theaccompanying drawings, wherein:

Figure 1 is a vertical axial section of an embodiment of my invention;

Figure 2 is a section on the line 2-2 ure 1. I 4

Like parts are indicated by like symbols throughout the specificationand drawings.

Referring to the drawings, i generally indicates an outer housing havinga plurality of feet 2 between which are air inflow spaces 3. The housingis partly closed by a horizontal partition t centrally apertured as atE. t is anangle ring which receives .the upper outwardly extendingflange 8 of a burner pot l. e indicates an upper portion of the housingl, which serves as a cornbustion chamber, or a heat radiating member.Any suitable draft means. not herein shown, may heated gases andby-products of combustion. One'end of the pot is partially closed by acentrally apertured flame ring iii. The pot is shown as having aslightly of Fisconcave bottom or closed end il and agenerallycylindrical side wall i2 provided withv a plurality of primaryair inlet apertures it, circumferentially spaced about the wall i2 andlocated at various distances abovefthe pot bottom. Located above. orbeyond the lowest oi .the primary air inlet apertures i8 is a centrallyapertured pilot bams ring ld supported on any suitable pins or supportsi5. A liquid fuel is supplied to the pot along the pipe i6, the rate offlow being controlled by any suitable control means generally indicatedas il. I illustrate, for example, a blown type oi' iloat valve assemblywith a manual control knob Id for controlling the flow oi fuel along thepipe it. However, it will be understood that any suitable control means,manual or automatic. may be provided for varying the rate of flow ofliquid fuel along ythe pipe i6 or for maintaining a uniform rate ofilow, when a uniform rate is desired. It will b e understood thatwhereas I have shown a vertically axised pot, the pot may behorizontally dll dit

axised or the axis may be variously inclined in relation to thevertical.

It will be understood that in pot type burners oi the present type, aliquid hydrocarbon is vaporiaed by the heat oi combustion taking placein or above the pot. The liquid hydrocarbon is admitted to the interiorof the pot and-is initially partially vaporized by the heat ofhydroxylation taking place in the pot. As the liquid hydrocarbon isvaporized in the pot it rises and is surrounded by a nlm of secondaryair. The radiantI heat from the ensuing complete combustion supplies theremainder of the additional heat neces sary to vaporlze all of theliquid hydrocarbon. There is a differentiation in 'act-ion between theso-called primary air and the so-called secondary air admitted to theinterior of the pot. With reference to the present structure, the airentering through the primary apertures i3. has a. different action thanthe air entering through the secondary apertures i9 or 20. All of theoxygen in the air entering through the primary apertures it isfully'consumed in the process of hydroxylation.

The oxygen in the air entering through the secondary apertures is onlypartially consumed. but all of the vaporized hydrocarbons surrounded bythe secondary air are entirely consumed.

when fuel is being supplied lto the pot for a high lire, combustiontakes place at a level de' fined by an imaginary surface at theconfluence of the air delivered through the apertures i9 andv 2@ oiFigure l. The flame iiows through the cen- -tral aperture oi the flamering i@ and into the combustion chamber il.

The present structure provides a particularly emcient means forsupplying the secondary air and for providing a silent and emcientcombustion. I employ, for example. two rows of secondary air inlets itand 2B. Each such row, in the iorm of Figure 1. is shown as formedbystrik- .me in the metal of which' the pot is 'roi-med te Thedeflectors il.

provide guides or defiectors. of the upper apertures i9 direct the airdownwardly and linwardly into the pot. The dodectors 32 oi the lower rowof secondary air inlet apertures 2s direct the air upwardly and in-lwardly into the pot. Preferably the deiiectors are arranged in pairsasshown in Figure i, in such fashion that the jet of air downwardlydirected from each guide 2i meets the jet oi air upwardly directed bythe corresponding guide 22.

It will be realized that whereas I have described and illustrated apractical and operative device, nevertheless many changes may be made inthe size, shape. number and disposition ot parte `iashion y prevented.Itis important that the secondary air the ture Y the air enters.

In a burner pot for member havin: a generally cylindrical cireum`without ldeparting fron; the spirit or my'invention. I'thereiore wish mydrawings and descripmy precise showing. y The use andopcration of theinvention are as follows: K f l In\pot type liquid hydrocarbon burners.it is hly :ilgsecondary air to a primary mixture in such a thatcombustion noises are substantially be provided in such quantities andat such location that the ilnal mixture will burn steadily clear back tothe wall of the pot. or to some other iixe'd plane or surface near thepoint otadmlsslon oi' secondary air supply. In the present stmothesecondary air is supplied ln imbinsing jets which engage at a shortdistance inwardly `from the wall of the pot and which provide an amplesupply oi' secondary air at the point oi vides quiet and eilicientcombustion. with an-axnple supply of air at the speed of ilow of theiinal iet and prevents any tendency for the final ,iet to b urn awayfrom. the inner face oi' the pot. Thus I obtain the ad- .vantase of theadmission oi the air vat a relatively low rate and of the provision ofan ample sup.- ply of air at the base oi the secondary Jet.

A primary cause of noisy combustion is the tendency of the base of theilame to leave the immediate vicinity of the orifice `through which Byproviding impinging .ietsl I control or limit the speed of the air Jetilow, and at the sametimevinsure an ample supply of secondary'air at thebase o1' the name, adjacent the inner face of the pot wall.

I. claim:

pot type burners, `a pot ferentiai wall and a closed end, the other endoi the pot being open. said circumferential wall important to provide anadequate supply lovthe corresponding inlets of the two rows being 20admission. In practice th'e form o! Figure 1 probase o! the Jet. Theinipingement of the two inclined jets holds down the g.

4 `having a plurality of primary air inlet apertures circuinierentiallyspaced thereabout and located at various distances from the closed end,said potwall having two circumferentially extending rows o! secondaryair inlets located acliacent the open end, the inlets oi the row nearestthe openl endof the pot being inwardly inclined toward the closed end,the inlets :of the other secondary row being inwardly inclined towardthe open end,

positioned `and adapted to deliver impinging jets of air into theinterior oi the pot,`and means for delivering a liquid fuel to theinterior oi the pot, each such secondary air inlet having alizned wtherewith a directing portion of the pot wall,

oiset inwardly from the side wall of the pot. the inner edges of saidinwardly oiset 'directing portions assisting in deilning the inletsassociated therewith.

JAMES L. BREESE.

' REFERENCES CITED i y'The following references are of record inthe illeof this patent: Y

' UNITED STATES PATENTS Number Nanie Date 1,275,608 Schaub -s Aug. 13,1918 1,754,573 Ruegsegger Apr. 15, 1930 1,940,879 Pickup Dec. 26, 19332,197,261- Breese ..-Jan. 16, 1940 2.200.861 Peoples May 14, 19402,212,078 Sabina Aug. 20, 1940 2,259,743 Fletcher -L.-- Oct. 21, 1941as, 2,286,489y Jones June 16, 1942 2,302,707 Pollock Dec. 8, 19422,326,221 Hill Aug. 26, 1943 2,381,744 Y Hayter Aug. 7, 1945 n FOREIGNPATENTS Number Country Date Ik, 20,038 Australia Aug. 15, 1935. 817,368France May 24, 1937

